On Tue, Jan 11, 2022 at 9:29 AM Ohad Levy <ohadl...@gmail.com> wrote:
> > > On Tue, Jan 11, 2022 at 9:19 AM Erez D <erez0...@gmail.com> wrote: > >> The windows 169.25. ip is from APIPA and not from any DHCP server >> (ipconfig does not specify a dhcp server). >> to be on the safe side I verified udp port 67 is unused on my mac (via >> netstat, fuser and socat) >> >> what boggles me is why can't the window machine access the router and get >> an ip when the mac is sleeping >> >> as the AP switch is layer 2, i would susspect the switch disables the >> windows machin for some reason, >> e.g. it sees the same mac address from another port or detects abuse of >> somewhat from the windows eth port >> however i do not understand how is this related to the mac sleeping >> >> I thought the AP switch maybe defective but puting another GB switch >> instead causes the same results ... >> > > can you run tcpdump on your router? does it show the dhcp requests from > your windows machine? > Alas, No. I know it is sacrilege but I use a hot cable modem/router. I do not have hardware that can support 500Mb to be used as a linux firewall ... Thanks, Erez. >> why do you thing HOMEGROUP is related ? it is a higher layer protocol >> when the problems seems to me on layer 2 >> >> Thanks, >> Erez >> >> >> >> >> On Tue, Jan 11, 2022 at 8:36 AM <borissh1...@gmail.com> wrote: >> >>> On Monday, 10 January 2022 19:30:55 IST Erez D wrote: >>> > I've encountered a network problem >>> > >>> > i have a mac and a win10 machine connected to a 4 port Gbit wifi6 AP >>> > (switch mode). >>> > a third eth from the AP goes to the router which is also a DHCP server >>> > >>> > everything works well until the mac goes to sleep. >>> > when the mac goes to sleep, the win10 machine looses it's ip address >>> > which becomes a 169. address >>> > >>> > as soon as i wake the mac up, the win machine regain a valid 10.0.0.x >>> ip >>> > >>> > i tried to replace the AP with a 4 port switch and got same results >>> > >>> > >>> > any idea ? >>> > >>> >>> IP in the 169.254.0.0/16 range is related to bonjour protocol , it is >>> a link local communication. >>> >>> your windows would move to a bonjur ip in many cases but most common >>> that can happen if your machine has a bonjour service enabled and an >>> Ethernet card with dhcp that can not get an ip from the router. >>> >>> 1. Check if when the mac is running your windows machine got it's ip >>> from the mac and not from the router. in some cases mac can have dhcpd >>> running on it, if that is the case you should disable it if you do not need >>> it. >>> 2. Check if homegroup is enabled on win10, if it is disable it (by >>> version 1803 it is no longer active by default, but you could have hacked >>> to enable it). >>> >>> >>> _______________________________________________ >> Linux-il mailing list >> Linux-il@cs.huji.ac.il >> http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il >> >
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